How can I get a serious woman to like me?

There's a girl I really like, but I'm not sure she likes me... she always called me "Mister", and we accidentally bumped into each other and she sprained her ankle so this wasn't a great start...

Lately though she accepted me helping her out loading stuff in her car, and accepted some cookies I made... she also started smiling at me and calling me by my first name...

I asked her if we could meet up sometimes, she said "Maybe we'll see..."

Does she likes me or she's just being civil? She did give me her number and sometimes she approached me on her own...

How can I get a serious woman to like me?
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